Switch from Google Universal Analytics to GA4

Question

As per google we need to use this snippet to migrate to GA4 from UA.

<script async src="https://www.googletagmanager.com/gtag/js?id=UA-XXXXX-Y"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'UA-XXXXX-Y');         // Universal Analytics property.
  gtag('config', 'TAG_ID');  // Google Analytics 4 property.
</script>

I have used this script and it works fine till now.

My question is, will having UA-XXXXX tag in above (src) url still keep GA4 working after 1st July when UA expires?
I want my GA4 Tag to continue to work.

Answer 1

Will having the UA-XXXXX tag in the above (src) url keep GA4 working after 1st July when UA expires?

Yes, It will work and will not impact your GA4.

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Will UA collect the data after July 1st, 2023?

• UA free will stop processing the data after July 1, 2023
• GA Premium (360) will stop processing the data after July 1, 2024

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Bit more detail on this

The id=UA-XXXXX-Y part in googletagmanager.com/gtag/js?id=UA-XXXXX-Y is an optional param.

The main gtag js library is googletagmanager.com/gtag/js and it is global for all Google Products.